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In order to rectify the issue, you can check:1️⃣
If there is any intercom or other device that is plugged into a 240Volts cable in the roof or cavity near Nexus or Nano Panel
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Check if there is anything that is hard-wired and could create a magnetic field around the CAT 5 cable of Nexus or Nano control panel.
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If the cable is a normal cat5 cable you can replace it with a shielded cat 5 cable.
If the issue persists, the Electrician needs to be called as they can check:
if If the indoor unit and iZone CPU is sharing the power in the roof.
Install noise cancellers on the CAT cable ends to reduce any EMF induced due to nearby electrical circuit.
Some installers install the iZone CPU by hardwiring the transformer to the power source of the indoor unit of the Air conditioner. That also causes a screen to flicker
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